Scale



Feb. 14, 192s.

w. F. sTlMPsoN 16591'23 SCALE Filed 0eme. 1921 5 sheets-shee 1 lll! IIII llll 'gamma/hoz MSM, www

Feb. 14, 1928.

IIlI 'nl 'n w. F. s'rlMPsoN SCALE v Filed Oct. 22. 1921 5 Sheets-Sheet 2 Feb. 14, 11928. 1,659,123

w. F. sTlMPsoN I SCALE Filed 0612.22, 1921 5 Sheets-Sheet 3 Feb. 14, 1928.

1,659,123 w. F. s'rlMPsoN SCALE Filed Oct. 22. 1921 5 Sheets-Sheet 4 Feb. 14,'1928.

W. F. STIMPSON SCALE Filed 061;.22. 1921 5 Sheets-Sheet 5 Patented Feb. 14, 1928.

WALTER F. STIMPSON, OF LQUISVILLE, KENTUCKY.

SCALE.

.Application ledv October 22, 1921.

The invention relates to scales and more particularly to that type known as counter scales. Among` the objects of the invention are; first, to obtain a sanitarj,7 construction which will permit of cleaning the counter beneath the scale; second. to completely house the levers and mechanism; third, to provide a stable support which is nevertheless, in effect, a three-point bearing facilitating the leveling of the scale: fourth, to condense the arrangement of the platform and supporting levers so that the base mayY be elevated from the counter without increase in the height of the platform; and fifth, to obtain a construction of pleasing appearance and one in which all of the part-s are readily7 accessible, facilitating assembly and detachment for adjustment or repair. Xfit-h these objects in view the invention consists in various features of construction as hereinafter set forth.

In the drawings:

Figure l is a vertical central section through the scale;

Figure 2 is a plan view with the platform and a portion of the housing removed and the column shown in horizontal section;

Figure 3 is a vertical cross section through the column;

Figure 4 is a front elevation;

Figure 5 is a plan view;

Figure 6 is a detail view;

Figure 7 is a section on the line 7-7 of Fig. 2.

In the construction of counter scalesit is usual to .provide a ring base for enclosing the platform levers, said base resting upon the counter and being covered bv the platform. The clearance space between the platform and this base ring will permit of a collection of dust and dirt which settles upon the counter and creates an unsanitary condition. `rWith certain types of scale the base ring is slightly7 raised bj; supporting feet, but this does not remedy the condition for the clearance is too slight to permit of cleaning beneath the scale. l.lilith in v improved construction, in place of the ring base, l have provided a frame' and housingl for the .platform levers which cenipletelj'.v enc. s the same. but is cut away so as to pro\ 1de space beneath the platform for cleaning. The

is prefeiabl7 lower portion of this housinoand by means of supporting f Tb rounded reet it is raised sufficiently above the counter to Serial No. 599,761.

provide abundant clearance for cleaning the same.

its specifically7 constructed, A is the platform supporting lever, preferably a lever of the third class having the wide portion A to which the fulcrnm pivots are attached. the forwardly extending arms A2 carrying the platform support-ing pivots and the central rearwardly extending arm A3 which connects with the steelyard rod` C is the lower frame and housing` member which surrounds the platform lever and which corresponds to the shape thereof. rllhus at the front the housing member C is of a width to receive the portion A of the platform lever, includingthe forward frtensions A2. At the center the member C is reduced ii width, as indicated at C', merelv providing' a housingl for the rearward eif- 'tendingl portion 13 of the lever and at the rear the casing is enlarged at C2 to form a support for the column. l) is a complementary housing member arranged above the Vplatfmii lever, being apertured at D" for the passage of the supporting legs E of the platform supjpmrting frame E. lllhen the complementary portions C and l) of the housing` are placed together, they will completely enclose the platform lever. The lower section is raised by feet F and therefore the space beneath the frame and above the counter is easily accessible for cleaning.

Cv is the hollow column which is supported upon the portion C2 of the base and which at its upper end is laterally extended at G to support the cylinder housing rlhe column G eneloses the steelyard rod I as well as the dash-pot and other accessories and it is preferably made with transparent panels G2, front and rear. through which the enclosed mechanism may be inspected.

rlhe construction of base and platform above described can be used with various types of scales, either gravity-actuated or sp ing scales, but as specifically shown it is applied to the latter type. J are the weighsprings which are supported from a hanger l within the portion G of the column and are attached at their lower ends to the steelyard rod l. This steeljvard rod is preferably a bifurcated construction with a voire l." at its lower end which is connected to the rearward extension A3 of the platform lever, wnile above this volte the rod is lafierallv offset at l2 to pass about the dashpotl L. Above the portion I2 is a bifurcated `portion lg which houses the lower'part of the springs J.' Thisy portion ls is provided at its upper end with a socket I4 in which a single rod l5 is secured by a set'screw TG Between the furcations of the portion Pis Va downwardly extending link L whichis Y coupled to the stem L2 of the dash-pot plungvof the rod l5.

Ver. A screw cap L3 is carriedby this stem,`

and when the link L is detached, this cap may bel used for closing the .cylinder of tljie dash-.pot'to prevent leakage ofthe uid during shipment. Y

- l/Vithin the cylindrical casing H is theY weighing and computing cylinderjh/J, this belng mounted upon shaft l journaled in l anti-friction bearings at opposite ends of the casing H. The shaft M has mounted thereon centrally thereof the pinionY M2 whichengages a rack N pendant from the upper end rlhe lower end of the rack has a rearwardly extending loop-shaped weight 'member N which embraces the rod l5 and serves to yieldably press the rack againstthe pinion. Thus the movementof the platform lever, which is transmitted byV the steelyard rod, will eect a movement .of the rack and a rotation of the pinion and cy'lindei'flv.

rlhe latform Supporting frame E carries the` weighing platform O, this bein@ preferably a glass plate. To holdthe platform from tipping, a check rod is. provided, this being connected to the rear end of. the platform frame, and rising vertically therefrom in front of the column G. The upper end of this rod P enters the cylindrical housing H between sections of the computing cylinder M and at .the upper end of the rod P is theV rearwardly-extending portion i3 to which is attached the fitting P2 for engaging the forwardly-extending v check link P3. The forward end of thisl link is attached by a litting P* toa biffurcated segmental vbracketr -arm .Q mounted on the column and extendvportion of the member l3- which embraces the cross bars "A4 of the 'lever A and support above the samethe plate Rt Onv this plate R4 is arranged a level member R5 whichis preferably circular in forni and engagesan aperture in the upperportion D of the level housing, so that the level will be visible from above said housing. 'Y The level member .E2 in the platfoni supporting frame. The

rscale is leveled by a `vertical adjustment ofV the feet F which areprovided with threaded stems that may be raised or lowered by turning.

'Eo support the scale without rocking, a three-point bearing isdesirable, but this doesV not V afford fas great stability Y as Ywhere four points are used. Y l have provided al four- -point support by placing-the legs F under opposite sides` of thel wide portion of the housings@ and two legs beneath the column G; V'lhese latter supports are, however, connectedy to an evener lever S which isl centrally fulcrumed within the base Vof theV column, .as indicated-at S, therebyT forming in eflect a three-point support. ,l-iowever,

stability is obtained by limitinf the` indef' pendent movement of the legs which areattached to the lever S, so that a slight tipping of the scale will take up the lost motion and, prevent further tipping.

It is usual to providespring scales with a thermostatically controlled adjustment means for compensating for temperature changes. l have provided a construction of thermostatic controlthat is-eifective in its operation and easily applied to the scale. rl`his consists` in a thermostat T of the expansible chamber type, which is located between the cross bars A4 of the platform lever A.V The forward end `of this thermostat is Arigidly ifi() attachedto the lever, while the rear end is Y coupled-toi a rod T passing rearward to a channel in the portion A3 of the lever. rod T is attached to an anti-friction carriage'l2 which has ythe pivot T3 connecting with the steelyard rod.f ever there is a rise in temperature, there will be a corresponding expansion of the thermostatT, which will carry the pivot 'lf3 rearward, increasing the leverage of the arm A3.

Gn the other hand, drop in temperature will contractthe thermostat T Vand will decrease the length of thelever larm A8.

For setting thecylinder to the zero Ypoint when the platform is without load, provision is made for raising and lowering the yoke K, whichanchors thefweighing springsV J. This consists of-a pair of rodsgU arranged on opposite sides oft-he springs J and extending from the yokelgdownward into the base. `The lower ends of these rods rest upon a bifurcated rocker member V which has a downwardly extending arm V adjacent to the end of a rod Vzwhich passes centrallybeneath the housing'member C to the forward endn thereof. The rear end of the rod V2 is threaded andV engages a threaded aperture in a lug V3, while'the forward end is swiveled ina lug Vt and is slotted to be turned by a: screw-driver. The turning of The Therefore, whentitl the rod V2 in one direction will move it rearwardf andV by engaging the arm V will tilt the rocker V and raise the rodsU. A. rotation of the rod V2 in the opposite direction will produce the opposite effect and the lowering ot the rods U. The movement ot the rods U will raise or lower the yoke K and? springs J', thereby eliecting an adjustment of the cylinder `M.

Variation in temperature will not only vary theV tension of the weighing springs, but' will also effect the adjustment ot the indicator. r[his is compensated Ator by forming the rods U of a metal such as brass, which, by its differential coeliicient ot expansion, w`ll act as a thermostat. The. fact that the rods extend 'from the base to the cylinder housing gives a su'flic'ent length to produce the compensation without the use of levers or other complications and this greatly simplifies the construction.

As shown in Figure tl. the anis ot the cylinder housing and of ther cylinder thoroughly offset from the center ot the hollow column. This gives a greater clearance for the checlr rod and the front et the cylinder housing and also by moving the cylinder housing and: cylinder forward. brings the reading line so much nearer to the operator in iront ot' the scale.

That l claim as my invention is:

l. In a scale, the combination with a platform supporting lever, ot a housing completely enclosing said lever, said housing including a pan shaped member having lower wall beneath said lever and a cover member for said pan shaped ieiulser enclosing said lever, and teetdepending troni said housing adapted to rest upon the counter or other support, said Vteet projecting a suiiicier-.t distance below aid bottom wall to provide adequate clearance beneath thD housing iior cleaning the counter.

2. ln a scale, the combination with a plat,- orni supporting lever, ot a housing` for said lever including a pan shaped member ei;- tending beneath said lever and a complementary cover n'ieinber extending above the same. a platform and a plattform supporting iframe above the housing` having aV plurality oi supportingY legs, the latter passing downward through apertures in the upper portion of said housing` int-o engagement with the platform lever.

In a scale, the combination with a platt'orm suppor"ng lever, ot a housing for said lever conforming to the eral contour lines of sai-'.lplattorm supporting lever nd inclue-ing a pan shaped member and a complementary cover member which together enclose said lever, said housing` being provided with a lower wall beneath said lever` aplurality of bosses extending downwardly from said wall and feet below said bosses, said bosses and feet being together oi sufficient height to raise said bot-torn wall considerablyy above the counter or other support thereby providing access for cleaning the counter beneath said lower wall.

a. ln a scale, the combination with. a ivilatit'orm supporting lever, ot a housing for said. lever contormingl to the general contour lines thereof and having a wide liront portion for the tulcrum and plat'lorm pivots, a uarroi' portion extending to the steelyard rod and an enlarged column supporting portion at the rear of' said narrow portion,.said housing including a pan shaied member and a complementary cover meniber vtor completely enclosin said platform supporting lever, and te-et V portion a Vd sai/l ing portion for rais' the housing above the counter to provide access theiebeneath tor cleaning.

ln a scale, the con'ibination with a platter-m, ot a platform supporting lever, and a housing for said plat'l'orin supporting lever 'termed in complementary upper and `lower sections, together completely enclosing said lever and conforming to the general contour lines therezrt'.

G. in a scale, the combination with a platform, ot. a. platform supporting lever having wide Lliront portion a narrow portion extending to the steelyard rod, said wide portion being provided v'ith rearwardly extending arms for the 'platform supporting pivots` and a housirg having a wide port-ion surrounding the wide portion otsaid plattform lever. and a rearwardlyv eX- tending narrow portion enclosing the narrow portion of said lever, said housing also being formed with a return-bend portion tor ng pockets adjacent `d plattform pivotv and thereby contornung closely to .our oif said lever.

T. in a scale, the combination with a plattorni. oil a platform supporting lever having a wide portion ior the iulcruin and plattorni pirots, narrow portion extending to the steelyard rod. a colui-.nn enclosing said steelyard rod', and a housing completely enclosing said plattform lever and conforming to the general contour lines thereof, said housing having a vide portion, a rearwardly` extending narrow portion and an enlarged column support podion, said housing also being formed with a returnbend portion forming pockets between the wide. and narrow portions eli the housing adjacent `d platform pivots.

S; in a scale, the combination with a plat- `torni, oi. a platform supporting lever having a wide Yfront. portion and a narrow rearwardly extending portion leading/'Ato the .-ielyafrd rod1 sai/d wide portion being also provided with rearwardly extending portions Jtor the platform supporting pivots, and a housing enclosing said lever conforming llo tothe generallines thereof having a narrow portion,ra wide portion and a portion eX- Atending -rearward from said wide portion. 9. In al scale', the combination with a plat form, of a. platform supportingvlever having'a wide portion and a narrow portioneX- tendingl to the steelyard rod, a housing for enclosing said lever conforming tothe gen- Aeral contour lines thereof, a hollowcolumn supportedat the end of the narrow; portion of said housing, a cylinder housing at the upper end of said column, a platform supporting frame having downwardly extendframe, of legs depending from said frame forming four-points of support, and an evener connection between two of said legs Y forming in effect a three-point support.

l2. In a scale, the combination with a V'frani e, of legs depending from said frame at four points,-an evener connection between twoof said legs having a central pivot-ai support, and means for limiting the rocking Y r adjustment of said evener. l Y y '131In A a scale,` thecombination with a Yframe having a plurality of supporting legs,

Aof an evener connection between two yof said supporting legs provided with'a central pivetal support.

liyln 1a scale, the combination with a platform, ofV a platform supporting lever, a Y

housing for said platform supporting lever, including a removable coverfor .the same having an aperture therein, and a level mounted. on the lower portion of `said lever housing visible through said aperture in the cover portion thereof.

l5. In a scale, .the combination withl a platform, of a platform supporting lever, a housing for said vplatform supporting lever 'conforming to the general contour lines thereof and comprising a lower section and a removable cover section provided with Van aperture, a yoke member within the lower vsect-ion of said housing'V forming the fulcrum supportfor'said lever, and a level supported from said yoke. above said lever, said level entending through the aperture in said cover section to be visible from without said hous`- ing.

16. In aV scale, the combination with a transparent platform, of a supporting lever therefor. a lhousing for lenclosing said supporting lever conformingto-the general contour linesV thereof, a platform supporting projecting upward from said housing, a cylinder housing at the upper end Iof* said: hollow column, a bifurcated'cylinder within said cylinder housing, operating mechanism benveen saidplatform supporting-lever and said bifurcated cylinder, a platform supporting frame having depending legs extending through the apertures in' said housing into engagement with f said platform lever, a check-,rod extending upward from said platform supporting frame and into rsaid cyl-v inder housing, a bifurcatedV segmental member through which said check-rod passes, a lateral offset onsaid rod` extending Ytowards lthe center of said cylinder housing, and a check link extending betweenl said laterally offset portion andgsaid segmental portion, being also between the Vbifurcated cylinder.

. 1S. In a scale, the combination with ,a platform, of a platform supporting lever,fa housing for said platform supporting lever, a hollow column ,projectino' upward from said housing, a cylinderl housing at the upper end of said column, a bifurcated cylinderfwithin saidcylinder housing, operating' mechanism between said platform support- AA ing lever and said bifurcated cylinder, a

platform supporting frame having depending legs supportedupon said platformlever, a check rod extending upward from the rear side of said platformv supporting'frameV and4 into said cylinder housing between the furcations of said cylinder, an arm on said checlr rod extending laterally towards the center of said cylinder housing, a segmental anchor arm Vextending from said column to the forward side of said cylinder housing, and a check linlr` connecting'said anchor arm to said lateralarm. Y

A19. In scale, Ythe combination with a frame provided withV a cylinder housing at its upper end, a bifurcated cylinder in said housing, a platform supporting lever opera- Y tively connected'to said cylinder, a platform engaging said platform supporting lever, a check rod extending from saidplatform upward and into said cylinder housing between tlie furcations of said cylinder, a

check link connected to said check rod and extending from near the center of said cylin- -1 der housingto the peripherythereof, anda segmental anchor arm connected at its lower end to said frame and at its upper end'to said checklink. Y

20. In a scale, the combination with a the upper end of said column, a bifurcated 'cylinder witnin said cylinder housing, a

plat-form supporting lever, a platform supporting frame engaging said lever, a check rod extending upward from said platform supportingl frame into said cylinder housing between the furcations of said cylinder, an anchor bracket extending upward from said column, and a check link connecting said anchor bracket and the upper end of said check rod.

21. In a scale, the combination with a base, a hollow column extending upward therefrom, a platform supporting lever mounted on said base, a steelyard rod con nected to said platform lever and extending upward within said hollow column, a platform supporting frame rest-ing upon said platform lever. a check rod extending upward from said platform supporting frame, a cylinder operatively connected to said steelyard rod, and a cylinder housing therefor, the axis of said cylinderl housing being laterally7 odset from the center of said hollow column, for the purpose described.

22. In a scale, the combination with a platform, of a platform supporting lever, a housing for said platform supporting lever formed' in complimentary upper and lower sections together completely inclosing said lever and coiiforming to the general contour lines thereof, and feet for raising said housing from the count-er or other support to provide access to the space therebeneath for cleaning.

23. In a scale, a platform supporting lever, a pan shaped member in which said platform supporting lever is mounted, and a complementary cover member for said pan shaped member whereby said lever` is enclosed.

In testimony whereof I affix my signature.

WALTER F. STIMPSON. 

